- 您現在的位置：買賣IC網 > PDF目錄373911 > AD7660 (Analog Devices, Inc.) Circular Connector; No. of Contacts:4; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-4 PDF資料下載
參數資料
| 型號： | AD7660 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:4; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-4 |
| 中文描述： | 16位，100 kSPS的的CMOS模數轉換器 |
| 文件頁數： | 17/20頁 |
| 文件大小： | 218K |
| 代理商： | AD7660 |
REV. 0
AD7660
–17–
External Discontinuous Clock Data Read after Conversion
This mode is the most recommended of the serial slave modes.
Figure 18 shows the detailed timing diagrams of this method.
After a conversion is complete, indicated by BUSY returning
low, the result of this conversion can be read while both
CS
and
RD
are low. The data is shifted out, MSB first, with 16 clock
pulses and is valid on both rising and falling edge of the clock.
Among the advantages of this method, the conversion perfor-
mance is not degraded because there is no voltage transients on
the digital interface during the conversion process.
Another advantage is to be able to read the data at any speed up
to 40 MHz which accommodates both slow digital host interface
and the fastest serial reading.
Finally, in this mode only, the AD7660 provides a “daisy chain”
feature using the RDC/SDIN input pin for cascading multiple
converters together. This feature is useful for reducing compo-
nent count and wiring connections when it is desired as it is, for
instance, in isolated multiconverters applications.
An example of the concatenation of two devices is shown in
Figure 19. Simultaneous sampling is possible by using a common
CNVST
signal. It should be noted that the RDC/SDIN input is
latched on the opposite edge of SCLK of the one used to shift
out the data on SDOUT. Hence, the MSB of the “upstream”
converter just follows the LSB of the “downstream” converter
on the next SCLK cycle. Up to twenty AD7660s running at
100 kSPS can be “daisy chained” using this method.
RDC/SDIN
BUSY
BUSY
DATA
OUT
AD7660
#1
(DOWNSTREAM)
BUSY
OUT
CNVST
CS
SCLK
AD7660
#2
(UPSTREAM)
RDC/SDIN
SDOUT
SCLK IN
CS IN
CNVST IN
CNVST
CS
SCLK
SDOUT
Figure 19. Two AD7660s in a “Daisy Chain” Configuration
External Clock Data Read During Conversion
Figure 20 shows the detailed timing diagrams of this method.
During a conversion, while both
CS
and
RD
are low, the result
of the previous conversion can be read. The data is shifted out,
MSB first, with 16 clock pulses, and is valid on both rising and
falling edges of the clock. The 16 bits have to be read before the
current conversion is complete. If that is not done, RDERROR is
pulsed high and can be used to interrupt the host interface to
prevent incomplete data reading. There is no “daisy chain”
feature in this mode, and RDC/SDIN input should always be
tied either high or low.
To reduce performance degradation due to digital activity, a fast
discontinuous clock of 18 MHz at least is recommended to ensure
that all the bits are read during the first half of the conversion
phase. For this reason, this mode is more difficult to use.
SCLK
SDOUT
D15
D14
D1
D0
D13
X15
X14
X13
X1
X0
Y15
Y14
CS
,
RD
BUSY
SDIN
EXT/I
NT
= 1
INVSCLK = 0
t
35
t
36
t
37
t
31
t
32
t
16
t
33
t
34
X15
X14
X
1
2
3
14
15
16
17
18
Figure 18. Slave Serial Data Timing for Reading (Read after Convert)
相關PDF資料 |
PDF描述 |
|---|---|
| AD7660AST | 16-Bit, 100 kSPS CMOS ADC |
| AD7660ASTRL | 16-Bit, 100 kSPS CMOS ADC |
| AD7664 | Circular Connector; No. of Contacts:4; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-4 |
| AD7664ASTRL | 16-Bit, 570 kSPS CMOS ADC |
| AD7664AST | 16-Bit, 570 kSPS CMOS ADC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7660ACP | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 16-bit Parallel/Serial 48-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:16-BIT, 100KSPS CMOS ADC - Bulk |
| AD7660ACPRL | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 16-bit Parallel/Serial 48-Pin LFCSP EP T/R |
| AD7660ACPZ | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 16-bit Parallel/Serial 48-Pin LFCSP EP |
| AD7660ACPZRL | 功能描述:IC ADC 16BIT UNIPOLAR 48LFCSP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7660AST | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 16-bit Parallel/Serial 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:16-BIT, 100KSPS CMOS ADC - Bulk 制造商:Analog Devices 功能描述:Digital-Analog Converter IC Interface Ty |
發布緊急采購，3分鐘左右您將得到回復。